Mineralization occurs along sheared and altered zones in massive, finely crystalline tuffs within the Lower Jurassic Hazelton Group volcanics.

Several small showings carrying auriferous tetradymite in shears and quartz veins were mapped and sampled. The hostrock is comprised of massive silicified andesite and dark grey to black andesitic tuff which is sheared and folded. Quarrying operations have exposed visible gold and crystals of tetradymite within quartz veins. Minor amounts of erythrite (cobalt bloom) were noted on the quarry face. Large garnet crystals were also noted near the quartz veining.

Assay results indicate the presence of high gold, silver, and some platinum associated with the bismuth-telluride deposits. The tetradymite occurs along the planes of shearing and is usually accompanied by native gold. Most of the shears parallel the bedding planes and were produced during folding. These strike southeast dipping between 20 to 40 degrees to the southwest in the lower mineralized zone while the upper and more eastern zones strike south and dip 20 degrees east. The productive zones are mainly confined to the crest of an anticlinal fold with a near vertical axial plane and trends in a southwest direction.

In some instances the mineralization appears to have filled pre-existing fractures due to a well developed "comb-structure" comprised of quartz crystals of appreciable size formed together with tetradymite crystals. In some cases the tetradymite shows a tendency to assume pseudomorphic form after quartz.